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Occurrence of Passiflora Latent Carlavirus in Cultivated and Wild Passiflora Species in Australia

April 1997 , Volume 81 , Number  4
Pages  348 - 350

R. D. Pares , L. V. Gunn , and E. N. Keskula , NSW Agriculture, Biological & Chemical Research Institute, PMB 10, Rydalmere, NSW 2116, Australia ; A. B. Martin , Royal Botanic Gardens, Mrs. Macquaries Rd., Sydney, NSW 2000, Australia ; and D. S. Teakle , Department of Microbiology, University of Queensland, Brisbane, Qld. 4072, Australia



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Accepted for publication 9 December 1996.
ABSTRACT

A carlavirus was found to be widespread in commercial passionfruit (Passiflora edulis) plantings in New South Wales and Queensland. The particles observed were flexuous rods with mean dimensions of 651 × 12 nm. The particles often occurred in cells as aggregates but were never associated with pinwheel inclusion bodies, as is typical with passionfruit woodiness potyvirus. The particles showed a strong affinity (by immunoelectron microscopy) for antiserum prepared against Passiflora latent carlavirus (PLV) from Germany but increasingly less affinity for antisera against potato viruses S and M and PLV from the United States. Survey results indicated that PLV has been present in Australian passionfruit for more than 10 years and is widespread in most commercial cultivars in New South Wales and Queensland. The virus was twice found in wild Passiflora suberosa, once in wild P. subpeltata, and once in a feral seedling of P. edulis near an infected planting of P. edulis.



© 1997 The American Phytopathological Society